A global plea is growing for Elon Musk to rescue three Chinese astronauts stranded in space after their return capsule was reportedly struck by an 'unknown object.' The Shenzhou-20 team, mission ...

Last patent date: 13 December 1921. Horn-type speaker on a cylindrical driver. Felt pad on bottom, cloth-covered wires. https://n2t.net/ark:/65665/ng49ca746a5-4c6e ...